Corkscrew



FIG. 1 is a perspective view of a corkscrew according to our new design;

FIG. 2 is a side view of the corkscrew;

FIG. 3 is a front view of the corkscrew;

FIG. 4 is a top view of the corkscrew;

FIG. 5 is a back view of the corkscrew; and,

FIG. 6 is a bottom view of the corkscrew. 

The ornamental design for a corkscrew, as shown and described. 